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Titolo:
MEASUREMENT OF THE PHOTON STRUCTURE-FUNCTION F(2)(GAMMA) IN THE REACTION E--]E+E-+HADRONS AT LEP(E)
Autore:
AKERS R; ALEXANDER G; ALLISON J; ANDERSON KJ; ARCELLI S; ASTBURY A; AXEN D; AZUELOS G; BAINES JTM; BALL AH; BANKS J; BARLOW RJ; BARNETT S; BARTOLDUS R; BATLEY JR; BEAUDOIN G; BECK A; BECK GA; BECKER J; BEESTON C; BEHNKE T; BELL KW; BELLA G; BENTKOWSKI P; BERLICH P; BETHKE S; BIEBEL O; BLOODWORTH IJ; BOCK P; BODEN B; BOSCH HM; BOUTEMEUR M; BREUKER H; BRIGHTTHOMAS P; BROWN RM; BUIJS A; BURCKHART HJ; BURGARD C; CAPILUPPI P; CARNEGIE RK; CARTER AA; CARTER JR; CHANG CY; CHARLTON DG; CHU SL; CLARKE PEL; CLAYTON JC; COHEN I; CONBOY JE; COOPER M; COUPLAND M; CUFFIANI M; DADO S; DALLAVALLE GM; DEJONG S; DELPOZO LA; DENG H; DIECKMANN A; DITTMAR M; DIXIT MS; SILVA EDE; DUBOSCQ JE; DUCHOVNI E; DUCKECK G; DUERDOTH IP; DUMAS DJP; ELCOMBE PA; ESTABROOKS PG; ETZION E; EVANS HG; FABBRI F; FABBRO B; FIERRO M; FINCKEKEELER M; FISCHER HM; FONG DG; FOUCHER M; GAIDOT A; GARY JW; GASCON J; GEDDES NI; GEICHGIMBEL C; GENSLER SW; GENTIT FX; GIACOMELLI G; GIACOMELLI R; GIBSON V; GIBSON WR; GILLIES JD; GOLDBERG J; GINGRICH DM; GOODRICK MJ; GORN W; GRANDI C; GRANT FC; HAGEMANN J; HANSON GG; HANSROUL M; HARGROVE CK; HARRISON PF; HART J; HATTERSLEY PM; HAUSCHILD M; HAWKES CM; HEFLIN E; HEMINGWAY RJ; HERTEN G; HEUER RD; HILL JC; HILLIER SJ; HILSE T; HINSHAW DA; HOBBS JD; HOBSON PR; HOCHMAN D; HOMER RJ; HONMA AK; HUGHESJONES RE; HUMBERT R; IGOKEMENES P; IHSSEN H; IMRIE DC; JANISSEN AC; JAWAHERY A; JEFFREYS PW; JEREMIE H; JIMACK M; JONES M; JONES RWL; JOVANOVIC P; JUI C; KARLEN D; KAWAGOE K; KAWAMOTO T; KEELER RK; KELLOGG RG; KENNEDY BW; KING J; KLUTH S; KOBAYASHI T; KOETKE DS; KOKOTT TP; KOMAMIYA S; KRAL JF; KOWALEWSKI R; VONKROGH J; KROLL J; KYBERD P; LAFFERTY GD; LAFOUX H; LAHMANN R; LAUBER J; LAYTER JG; LEBLANC P; LEE AM; LEFEBVRE E; LEHTO MH; LELLOUCH D; LEROY C; LETTS J; LEVINSON L; LLOYD SL; LOEBINGER FK; LORAH JM; LORAZO B; LOSTY MJ; LOU XC; LUDWIG J; LUIG A; MANNELLI M; MARCELLINI S; MARKUS C; MARTIN AJ; MARTIN JP; MASHIMO T; MATTIG P; MAUR U; MCKENNA J; MCMAHON TJ; MCNUTT JR; MEIJERS F; MENSZNER D; MERRITT FS; MES H; MICHELINI A; MIDDLETON RP; MIKENBERG G; MILDENBERGER J; MILLER DJ; MIR R; MOHR W; MOISAN C; MONTANARI A; MORI T; MORII M; MULLER U; NELLEN B; NGUYEN HH; ONEALE SW; OAKHAM FG; ODORICI F; OGREN HO; ORAM CJ; OREGLIA MJ; ORITO S; PANSART JP; PANZERSTEINDEL B; PASCHIEVICI P; PATRICK GN; PAZJAOSHVILI N; PEARCE MJ; PFISTER P; PILCHER JE; PINFOLD J; PITMAN D; PLANE DE; POFFENBERGER P; POLI B; PRITCHARD TW; PRZYSIEZNIAK H; QUAST G; REDMOND MW; REES DL; RICHARDS GE; RISON M; ROBINS SA; ROBINSON D; ROLLNIK A; RONEY JM; ROS E; ROSSBERG S; ROSSI AM; ROSVICK M; ROUTENBURG P; RUNGE K; RUNOLFSSON O; RUST DR; SASAKI M; SBARRA C; SCHAILE AD; SCHAILE O; SCHAPPERT W; SCHARF F; SCHARFFHANSEN P; SCHENK P; SCHMITT B; VONDERSHMITT H; SCHRODER M; SCHWICK C; SCHWIENING J; SCOTT WG; SETTLES M; SHEARS TG; SHEN BC; SHEPHERDTHEMISTOCLEOUS CH; SHERWOOD P; SIROLI GP; SKILLMAN A; SKUJA A; SMITH AM; SMITH TJ; SNOW GA; SOBIE R; SPRINGER RW; SPROSTON M; STAHL A; STEGMANN C; STEPHENS K; STEUERER J; STROHMER R; STROM D; TAKEDA H; TAKESHITA T; TAREM S; TECCHIO M; TEIXEIRADIAS P; TESCH N; THOMSON MA; TORRENTELUJAN E; TOWERS S; TRANSTROMER G; TRESILIAN NJ; TSUKAMOTO T; TURNER MF; VANDENPLAS D; VANKOOTEN R; VANDALEN GJ; VASSEUR G; WAGNER A; WAGNER DL; WAHL C; WARD CP; WARD DR; WARD JJ; WATKINS PM; WATSON AT; WATSON NK; WEBER M; WEBER P; WELLS PS; WERMES N; WHALLEY MA; WILKENS B; WILSON GW; WILSON JA; WINTERER VH; WLODEK T; WOLF G; WOTTON S; WYATT TR; YAARI R; YEAMAN A; YEKUTIELI G; YURKO M; ZEUNER W; ZORN GT;
Indirizzi:
UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS MANCHESTER M13 9PL LANCS ENGLAND INFN I-40126 BOLOGNA ITALY UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BOLOGNA,DIPARTIMENTO FIS I-40126 BOLOGNA ITALY UNIV BONN,INST PHYS W-5300 BONN 1 GERMANY UNIV CALIF RIVERSIDE,DEPT PHYS RIVERSIDE CA 92521 UNIV CAMBRIDGE,CAVENDISH LAB CAMBRIDGE CB3 0HE ENGLAND CERN,EUROPEAN ORG PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND CARLETON UNIV,DEPT PHYS OTTAWA K1S 5B6 ONTARIO CANADA CARLETON UNIV,CTR RES PARTICLE PHYS OTTAWA K1S 5B6 ONTARIO CANADA UNIV CHICAGO,ENRICO FERMI INST CHICAGO IL 60637 UNIV CHICAGO,DEPT PHYS CHICAGO IL 60637 UNIV FREIBURG,FAK PHYS W-7800 FREIBURG GERMANY UNIV BRITISH COLUMBIA,DEPT PHYS VANCOUVER V6T 1Z1 BC CANADA UNIV HEIDELBERG,INST PHYS D-69117 HEIDELBERG GERMANY INDIANA UNIV,DEPT PHYS BLOOMINGTON IN 47405 UNIV LONDON,QUEEN MARY & WESTFIELD COLL LONDON E1 4NS ENGLAND UNIV LONDON BIRKBECK COLL LONDON WC1E 7HV ENGLAND UNIV LONDON UNIV COLL LONDON WC1E 6BT ENGLAND UNIV MARYLAND,DEPT PHYS COLL PK MD 20742 UNIV MONTREAL,PHYS NUCL LAB MONTREAL H3C 3J7 QUEBEC CANADA UNIV OREGON,DEPT PHYS EUGENE OR 97403 RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND SFP,DAPNIA F-91191 GIF SUR YVETTE FRANCE TECHNION ISRAEL INST TECHNOL IL-32000 HAIFA ISRAEL TEL AVIV UNIV,DEPT PHYS & ASTRON IL-69978 TEL AVIV ISRAEL UNIV TOKYO,INT CTR PARTICLE PHYS TOKYO 113 JAPAN UNIV TOKYO,DEPT PHYS TOKYO 113 JAPAN KOBE UNIV KOBE 657 JAPAN BRUNEL UNIV UXBRIDGE UB8 3PH MIDDX ENGLAND WEIZMANN INST SCI,DEPT NUCL PHYS IL-76100 REHOVOT ISRAEL UNIV HAMBURG,DESY 2,INST EXPTL PHYS D-22607 HAMBURG GERMANY UNIV ALBERTA,DEPT PHYS EDMONTON T6G 2N5 AB CANADA DUKE UNIV,DEPT PHYS DURHAM NC 27706
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 2, volume: 61, anno: 1994,
pagine: 199 - 208
SICI:
0170-9739(1994)61:2<199:MOTPSF>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRUCTURE-FUNCTION F2; SCALE PARAMETER-LAMBDA; QCD; Q2; SCATTERING; SENSITIVITY; DETECTOR; GEV2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
R. Akers et al., "MEASUREMENT OF THE PHOTON STRUCTURE-FUNCTION F(2)(GAMMA) IN THE REACTION E--]E+E-+HADRONS AT LEP(E)", Zeitschrift fur Physik. C, Particles and fields, 61(2), 1994, pp. 199-208

Abstract

We present measurements of the hadronic photon structure function F2gamma(x), in two Q2 ranges with mean values of 5.9 GeV2 and 14.7 GeV2. The data were taken by the OPAL experiment at LEP, with square-root s close to the Z0 mass and correspond to an integrated e+ e- luminosity of 44.8 pb-1. In the context of a QCD-based model we find the quark transverse momentum cutoff separating the vector meson dominance (VMD) and perturbative QCD regions to be 0.27 +/- 0.10 GeV. We confirm that there is a significant pointlike component of the photon when the probephoton has Q2 > 4 GeV2. Our measurements extend to lower values of x than any previous experiment, and no increase of F2gamma(x) is observed.

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Documento generato il 27/11/20 alle ore 02:11:53